"""Playlist schemas."""
from datetime import datetime
from typing import Optional, List
from uuid import UUID

from pydantic import BaseModel, Field, ConfigDict


class PlaylistBase(BaseModel):
    """Base playlist schema."""

    name: str = Field(..., min_length=1, max_length=255)
    description: Optional[str] = None
    image_url: Optional[str] = None
    is_public: bool = False
    is_collaborative: bool = False


class PlaylistCreate(PlaylistBase):
    """Schema for creating a playlist."""

    pass


class PlaylistUpdate(BaseModel):
    """Schema for updating a playlist."""

    name: Optional[str] = Field(None, min_length=1, max_length=255)
    description: Optional[str] = None
    image_url: Optional[str] = None
    is_public: Optional[bool] = None
    is_collaborative: Optional[bool] = None


class PlaylistResponse(PlaylistBase):
    """Schema for playlist response."""

    model_config = ConfigDict(from_attributes=True)

    id: UUID
    user_id: UUID
    track_count: int
    total_duration: int
    is_smart: bool
    smart_rules: dict
    created_at: datetime
    updated_at: datetime


class PlaylistWithTracks(PlaylistResponse):
    """Schema for playlist with tracks."""

    tracks: List[dict] = Field(default_factory=list)


class AddTrackRequest(BaseModel):
    """Schema for adding tracks to playlist."""

    track_ids: List[UUID] = Field(..., min_length=1, max_length=100)
    position: Optional[int] = None


class ReorderTracksRequest(BaseModel):
    """Schema for reordering tracks in playlist."""

    track_id: UUID
    new_position: int = Field(..., ge=0)


class PlaylistTrackResponse(BaseModel):
    """Schema for playlist track response."""

    id: UUID
    playlist_id: UUID
    track_id: UUID
    position: int
    added_at: datetime
    added_by: Optional[UUID] = None
    track: Optional[dict] = None